| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/log/net_log_values.h" |
| |
| #include "base/base64.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_util.h" |
| #include "base/values.h" |
| #include "net/base/escape.h" |
| |
| namespace net { |
| |
| namespace { |
| |
| // IEEE 64-bit doubles have a 52-bit mantissa, and can therefore represent |
| // 53-bits worth of precision (see also documentation for JavaScript's |
| // Number.MAX_SAFE_INTEGER for more discussion on this). |
| // |
| // If the number can be represented with an int or double use that. Otherwise |
| // fallback to encoding it as a string. |
| template <typename T> |
| base::Value NetLogNumberValueHelper(T num) { |
| // Fits in a (32-bit) int: [-2^31, 2^31 - 1] |
| if ((!std::is_signed<T>::value || (num >= static_cast<T>(-2147483648))) && |
| (num <= static_cast<T>(2147483647))) { |
| return base::Value(static_cast<int>(num)); |
| } |
| |
| // Fits in a double: (-2^53, 2^53) |
| if ((!std::is_signed<T>::value || |
| (num >= static_cast<T>(-9007199254740991))) && |
| (num <= static_cast<T>(9007199254740991))) { |
| return base::Value(static_cast<double>(num)); |
| } |
| |
| // Otherwise format as a string. |
| return base::Value(base::NumberToString(num)); |
| } |
| |
| } // namespace |
| |
| base::Value NetLogStringValue(base::StringPiece raw) { |
| // The common case is that |raw| is ASCII. Represent this directly. |
| if (base::IsStringASCII(raw)) |
| return base::Value(raw); |
| |
| // For everything else (including valid UTF-8) percent-escape |raw|, and add a |
| // prefix that "tags" the value as being a percent-escaped representation. |
| // |
| // Note that the sequence E2 80 8B is U+200B (zero-width space) in UTF-8. It |
| // is added so the escaped string is not itself also ASCII (otherwise there |
| // would be ambiguity for consumers as to when the value needs to be |
| // unescaped). |
| return base::Value("%ESCAPED:\xE2\x80\x8B " + EscapeNonASCIIAndPercent(raw)); |
| } |
| |
| base::Value NetLogBinaryValue(const void* bytes, size_t length) { |
| std::string b64; |
| Base64Encode(base::StringPiece(reinterpret_cast<const char*>(bytes), length), |
| &b64); |
| return base::Value(std::move(b64)); |
| } |
| |
| base::Value NetLogNumberValue(int64_t num) { |
| return NetLogNumberValueHelper(num); |
| } |
| |
| base::Value NetLogNumberValue(uint64_t num) { |
| return NetLogNumberValueHelper(num); |
| } |
| |
| base::Value NetLogNumberValue(uint32_t num) { |
| return NetLogNumberValueHelper(num); |
| } |
| |
| base::Value NetLogParamsWithInt(base::StringPiece name, int value) { |
| base::Value params(base::Value::Type::DICTIONARY); |
| params.SetIntKey(name, value); |
| return params; |
| } |
| |
| base::Value NetLogParamsWithInt64(base::StringPiece name, int64_t value) { |
| base::Value params(base::Value::Type::DICTIONARY); |
| params.SetKey(name, NetLogNumberValue(value)); |
| return params; |
| } |
| |
| base::Value NetLogParamsWithBool(base::StringPiece name, bool value) { |
| base::Value params(base::Value::Type::DICTIONARY); |
| params.SetBoolKey(name, value); |
| return params; |
| } |
| |
| base::Value NetLogParamsWithString(base::StringPiece name, |
| base::StringPiece value) { |
| base::Value params(base::Value::Type::DICTIONARY); |
| params.SetStringKey(name, value); |
| return params; |
| } |
| |
| } // namespace net |